Unique account numbers via view in couchbase

uniq_acct_numbers.rb

# Get a number of unique account numbers via a map / reduce view
#
# foobar bucket contains:
#
# A = {"acct":"123456","name":"John Smith"}
# B = {"acct":"123456","name":"John Smith"}
# C = {"acct":"123457","name":"Jane Doe"}
#
# map:
#
# function (doc, meta) {
#   if (doc.acct) {
#     emit(doc.acct);
#   }
# }
#
# and reduce:
#
# _count
#

require "couchbase"
cb = Couchbase.connect("http://localhost:8091/pools/default/buckets/foobar")

accts = cb.design_docs["test"].test(group: true).map { |doc| doc.key }
p accts # => ["123456", "123457"]